datetime.strptime(date_string,format) Both the arguments are mandatory and should be string. This function is exactly opposite ofstrftime() function, which converts datetime object to a string. 这两个参数都是强制性的,应为字符串。 此函数与strftime()函数完全相反,该函数将datetime对象转换为字符串。
%X Locale’s appropriate time representation. 07:06:05 %% A literal '%' character. % ValueError in strptime() If the string (first argument) and the format code (second argument) passed to the strptime() doesn't match, you will get ValueError. For example: from datetime import datetime ...
def locale_comma_to_float(string_value): # Set US locale (for comma as thousand separator) locale.setlocale(locale.LC_ALL, 'en_US.UTF-8') # Parse the string and convert to float return locale.atof(string_value) # Example usage try: price_string = "1,234.56" price_float = locale_co...
Python使用区域设置将字符串转换为日期时间 (Python Convert String to Datetime with locale) Let’s look at an example where a locale-specific string will be converted to datetime object. We will use locale module to set the locale to be used by python. 让我们看一个示例,其中将特定于语言环境的...
For example, int(“1a”, 16) would convert the hexadecimal “1a” to 26 in decimal. Binary string num = int("1010", 2) print(num) # Output: 10 print(type(num)) # Output: <class 'int'> Octal string num = int("12", 8) print(num) # Output: 10 print(type(num)) # Output:...
Example 1: datetime to string using strftime() The program below converts a datetime object containing current date and time to different string formats. from datetime import datetime now = datetime.now() # current date and time year = now.strftime("%Y") print("year:", year) month = now...
Convert String todatetime.datetime()Object with Locale Example The following example converts a German locale date string into adatetime.datetime()object, and prints the class type and value of the resulting object: fromdatetimeimportdatetimeimportlocale ...
f-string expression part cannot include '#' 2. 速度f字符串中f也有“速度快”的意思,f字符串比%格式化和str.format()都快。 我们来测试下这几种格式化字符串的速度: >>> importtimeit >>> timeit.timeit("""name = "ZWJ" age = 20 '%s is %s.' % (name, age)""", number = 100000)...
Formatting and Styling:String formatting is a useful tool for customizing how textual data appears. When you convert integers to strings, you can format numbers according to specific needs, such as adding leading zeros, specifying decimal precision, or using comma separators. ...
format string = string literals + replacement fields 格式字符串(format string) 由 字符串字面量(string literals) 或 替代字段(replacement fields)构成。 替代字段(replacement field)是由一对花括号括起来的内容; 非替代字段的字符都被作为字符串字面量(string literals); ...